Power handsaw



Jan. 6, 1925.

HQ LUsTlG POWER HAND SAW A Filed Jan. 22, 1923 2 Sheets-Sheet, 1

Jan'. 6, 1925- 1,521,692 H. LUSTIG POWER HAND S AW Filed Jan. 2.2, 19232 sheets-sheet 2 Patented Jan. 6, 19275.

NITED ASTATES PATENT oFFl-CE.

HERBER'I LUSTIG, 0F YOUNGSTOWN, OHIO, ASSIGNOR T0 JOSEPH J'. LUSTIG, 0F

- SARANAC LAKE, NEW YORK. i

POWER. HANDSAW.

A Application led January 22, .1923. Serial Np. 614,240.

vTo all whom t may concern:

Be it known that I, HERBERT LUsTIG, a citizen' of the United States,residing at 802. West Woodland Avenue, Youngstown,

6 Ohio, have invented a new and useful Power Handsaw; and I do herebydeclare the following to be a full, clear, and exact description of thesame.

This invention relates to a power hand tool, and more particularly to asaw.v l

One of -the principal objects of the 1nvention is to provide a readilyportable hand sawl v A further object is to provide a hand '15 sawhaving a novel guide means for the saw holder.

Another object is to provide a hand sawI having a novel powertransmittmgmeans.

' A still further object is to provide a 'hand saw having an improvedsaw clamp or holdin means.

4 urther objects are to simplify the construction,.reduce the cost ofmanufacture,

and increase the eiciency' of devices of this character.

. Other and further objects will appear ,1n the following detaileddescription, reference being had to the accompanying figures of drawing,wherein.;

Fig. 1 1s aside elevation of plete device; M Fig. 2 is a= side elevationfrom the side opposite to that shown in Fig. 15

F ig.y 3 is a plan view, parts being 1n section' l Fig. 4 is a verticalsection on line 4-4 of Fig. 3, parts beingshown in elevation; ig. 5 isa' vertical section on llne 5-5 of Fig. 6; l 401 Fig. 6 is a sideelevatlon of a portion of the device, parts being shown in'seo tion;

Figs. A7 and 8 are the two tool clam ing member;

Fig` 91s a perspective view of the,` butt end of the saw; and

Fig. 10 isl a View ofthe saw` clamp gulde member. .l

The device comprises a casing 3 receivthe com parts of the such as 6which serves as pair,

ing a saw or other to`ol 4, and a prime-v mover, suclu as an electricinlotorw, attached thereto by any appropriate means,

a carrying and 'operating handle fory the tool, and carries convementlyarranged thereon, a starting button 7 for the motor 5.

The casing 1, includes four side members 8, 9,- 10 and 11, and a backand front cover 12 and 13, respectively, the latter being connected to aside member by means of hinges 14.

Within the casing 1, is' positioned a guide member having uprights 15and 16, and

cross-bar 17.

Positioned to slide upon the cross-bars 17.

is a saw clamp designated generally as 1S. The clamp comprises tworelativel able telescoping members, 19 an 20, the end' portions 2l,sliding in slots 22. Lugs 23, formed on 19, lit into correspondingsockets 24, in member 20. The two clamp members are drawn together, andheld firm'- ly in place by lmeans of threaded bolts 25 carried by 19,and screwing into member 20. The saw or other suitable tool, having abutt end itted with apertures for relceiving bolts 25 and lugs J23, `asshown at 23', 25 is firmly clamped between members 19 and 20, andisreadily removed for reor replacement by a fresh tool.

Within the member V20, is ,a lengthwise groove 27, whereby the ,clamp`member is actuated, as explained below.

Arranged in the clamp member 20, are

.slots 26 `to receive the bars 17, whereby the lclamp and attached toolis properly guided. The side member 9 of the casing 1 is furnished withaslotl foithe saw or.

other tool.

In the back coverA 12 is journalled a shaft 47, carrying a driving wheel28, on its outer end outside of the casing 1, and a driven wheel 29, onits inner end, and Awithin the casing 3. Wheel 29 is guidedand held truein its rotation by means' of two -members -30 and 31 closely fitting thecasing 1,'an`d having matching semiclrcular cutout portions 30, 31',which fit into a groove 32,

around the fentire periphery of wheel 2,9.

.In this'manner, wheel or l' disc 29 is restrained to rotate about acenter, without nej cessity for stub shaft 47 'to have a second1bearing.

Carried by Awheel 29, is a wrist pin or crank 33, whichlfits withingroove 27, and

' illustration,

tion is inno way limited to the particular means shown. Attached to.cover l2 1s a 'housing 37 for encasing the abovedescribed drivingmechanism. Y y

The operation of the device which should now be apparent from thev abovedetailed description is as Afollows. The operator grasps the handle 6,placing the tool in operating position, and presses button 7, startingthe motor 5 which receives its energy Jfrom an external circuit, notshown-in the e 'motor 5' rotates pulley .34

drawing. Th which rotates wheel 29 by vmeans of driv-` ing wheel 28. Thecrank member 33 slides up and down in groove 27 and at the same v timereciprocates thecross-head clamp mem-- ber 18 on the guides 17 and withit the saw 4 or other tool.

It will be appreciated from the foregoing that the tool is readilyreplaceable and that the saw may be replaced by a file or like tool.

' is inno way limited to It is also clear that the guide bars, and theclamp member, rigidly restrain the operating tool to a reciprocatorymotion and that 'guide members 30, 31, hold wheel 29 to run true andobviate the necessity of through` shaft in place of the stub shaft 47 asshown.

A single and preferred embodiment' of the inventive concept, has -beendescribed" and illustrated in the foregoing specification in order tocomply with' the patent statutes but it is to be distinctly understoodthat this embodiment -is set forth solely-for` the purpose ofillustration and that the invention the structure shown and described.

What I now claim as my invention is 1. A power .hand tool comprising incombination a casing, a work tool', a reciprocable tool clamp located inthe casing for receiving the end of the tool, a guide in the casing forthe tool clamp, a'prime mover, and power transmittin `means forconnecting the tool clamp an theV prime mover, said guide comprising vaplura it)7 of guide. bars supported at their ends by uprights, the

Y bination' a casing,

guide being proportioned to fit snugly within the casing and the guidebars slidably receiving the tool clamp. v

v2. A power hand 'too comprising in coma work tool, a recipro cable toolclamp located in the casing for receiving the end of the tool, a guidein vprising a the casing for the tool clamp, a prime mover, and powertransmitting means for connecting the tooll clamp and the prime mover,said power transmitting means comprising a driven wheel withinv thecasing and having an edge slot encircling .its entire 'periphery and twosemi-circularly recessed guides in the casing, the recesses matching toform a circular recess, the edge of which is received 1n said slot,whereby the driven -wheel is held to rotate to a center.

3. A power hand tool comprising in combination a casing, a work tool, areciprocable tool clamp located. in the casing for receiving the end ofthe tool, a guide in the casing for the mover, and power transmittingmeans' for connecting thetool clamp and the prime mover, said powertransmitting means comdriven wheel within .the casing and having an edgeslot encircling its entire periphery and two semi-circular y recessedguides in the casing, the recesses matching to form a circular recess,the edge o which is received in said slot, so that the driven wheelis-held to rotate about a center, said wheel carrying a wrist pin whichreciprocates in a groove in the-tool clamp, a stub shaft journalled in aside of the casing and carrying the driven wheel on one end, the otherend of the bshaftcarrying'a driving wheel and said power transmittingmeans transferring energy from the prime mover to the driving wheel.4 4.A' power operated hand tool comprisingv a work tool, and means forreciprocating the same, such'means for reciprocation comprising across-head clamping the tool end, a rotating disc member provided with awrist pin, said, pin engagingin a slot in the cross-head clamp and aplurality of guide bars slidably receiving and extending through thecross-head clamp so that rotation of the disc member reciprocates thecross-head clamp on the guide bars.

5. A power hand toolcomprising in combination a casing, a work tool, 'areciprocable tool clamp located in the casing for receiving the end ofthe tool, a guide in the casing for the tool clamp, a prime mover, andpower transmitting means for connecting the tool clamp' and the primemover, said guide comprising a plurality of ide bars supported at theirends by uprights, the

1de being proportioned to fit snugly with- 1n the casing and the guidebars slidably receiving the tool clamp, said tool clamp comprising twoco-acting members, the one member carrying bolts, rectangular toolholding lugs and projecting members, the othermember of the clamp havingsockets for receiving the bolts, rectangular a ertures for receiving tlugs and gui ing grooves for receiving t `e `projecting memtool clamp, aprime positioned outside of the casing,

lll@

bers, whereby the `tool end can be securely clamped between; the twoco-acting members and held in rigid alignment.

6. -A power hand tool comprising in combination a casing, a work tool, areclprccable tool clamp located in the casing for receivingthe end ofthe tool, a guide in the casing for the tool clamp, a prime mover, and

- power transmitting means for connecting the -tool clamp andthe primemover, said guide comprismg a plurality of guide bars supported at theirends by uprights', the guide being proportioned to fit snugly with--i1r`the casing and the guide bars slidably receiving the tool clamp,said tool clamp comprising two co-acting members, the one membercarrying bolts, rectangular tool and held in rigid align 'holding lugsand projecting members, the

other member of the clamp having sockets for receiving the bolts,rectangular" aperturesI for receiving the lugs and guiding grooves forreceivmg the projecting mem-v bers, whereby the tool end can be securelyclamped between the two co-acting members comprising a plurality of idebars su ported at their ends by uprl hts, the who e guide beingproportioned to t snugly within the casing, and the guide barsprojecting through ,and slidably receiving the tool clamp.

4In testimony whereof, I have signed my name vto this specification.HERBERyT LUSTIG.

ment, and said guide

